Which of these is an effect of space travel?

muscle shrinkage

decreased bone density

bone density increase

increase in muscle mass

Does electricity flow somewhat like water?

What is faster? The speed of light or the absence of light?

According to the Big Bang theory timeline, all matter and energy was compressed into a very small volume at an extremely high temperature. a. True b. False

The earth takes 1 year to revolve around the sun at 1 A. U. distance (an astronomical unit = 93,000,000 miles). If a planet were 4 A. U. from the sun, how many years would it take to make 1 orbit?

A person takes a trip, driving with a constant speed of 94.5 km/h except for a 22.0 min rest stop. If the person's average speed is 65.1 km/h, how much time is spent on the trip and how far does the person travel?

Which of the following do not involve a direction? Check all that apply. A. Time B. Velocity C. Distance D. Acceleration

What does deltaX mean in physics?

Which activity involves using fossil fuels directly or indirectly? 1) eating fresh fruit for a snack 2) cooking hot dogs on a campfire 3) using crayons to color 4) walking to school

Which of the following objects would have the most inertia? A. A sphere with a radius of 5 cm and a mass of 34 grams. B. A sphere with a radius of 4 cm and a mass of 15 grams. C. A sphere with a radius of 8 cm and a mass of 27 grams. D.

A boy slides a book across the floor using a force of five and over a distance of 2M what is the kinetic energy of the book after he slides at assume there is no friction